Radio and like socket



March 23, 1937.

C, L. KNUTSON RADIOAND LIKE SOCKET Filed April 21, 1954 1722167170 2'.- CarZL.Knuifson '29 m aw Patented Mar. 23,

PATENT OFFICE RADIO AND LIKE SOCKET Carl L. Knutson. Maywood, IlL, assignor to Oinoh6 Manufacturing Corporation, Chicago, 111., a corporation of Illinois Application April 21, 1934, Serial No. 721,732-

11 Claims.

My invention aims to provide improvements in sockets particularly, though not exclusively, useful in connection with the reception of the prongs of a radio tube.

5 In the drawing which illustrates a preferred embodiment of my invention:-

, Figure 1 is a plan view of a preferred form of socket;

Fig. 2 is a bottom view of a preferred form 10 of socket;

Fig. 3 is a side elevation of the socket shown in Figs. 1 and 2;

Fig. 4 is an end elevation of the socket shown in Figs. 1 and 2; 4 15 Fig. 5 is a section taken on the line 5-5 of Figure 1; Fig. 6 is a section taken on the line 6-6 of Figure 1;

Fig. 7 is a plan section takenon the line 1-1 m of Fig. 3;

Fig. 8 is an enlarged section taken on the line H of Figure 1; and

Fig. 9 is a side elevation of the contact member per se.

The particular socket structure illustrated by the annexed drawing is formed with a top plate I, a bottom plate 2, a plurality of contact members and means for securing the parts together.

The top and bottom plates I and 2 are preferably 30 formed from relatively thin, non-conducting material and are arranged in superposed spaced relation. A guide disk 3 is located in the center of the top plate I and is held in position by a fastener element, such as'the bolt 4 '(Fig. 5) or a a5 rivet 5 (Figs. 3 and 7).

The top plate I has a plurality of apertures 6 and the bottom plate 2 has a plurality of apertures I, as shown in Fig. 5. These apertures are 'in alignment with each other and located in a 40 circle just outside the periphery of the guide plate 3 (Fig. 1) .so that they may permit passage of the prongs of a radio tube or other like devicewith which the socket is adapted to cooperate.

Each contact member is formed from a single 45 piece of relatively springy material and has a pair of arms 8-8 paralleling each other but bent to provide a substantially circular opening between them, as shown in Fig. 7. Thearms,

8-8 are connected togethervat one end by a rela- 50 tively' wide loop portion 9, while the other ends are provided with projections Iii-l at one side and projections I I-II at the opposite side the purposes of which will be more fully hereinafter described. Each contact .is also provided with a soldering lug I2 extending from the loop portion 9 and adapted to have a suitable wire soldered or otherwise fastened thereto.

The contact members are assembled with the plates I and 2 in such a manner that each is associated with a hole 6 in the plate I and an aperture 1 in the plate 2. The assembly is such that all of the contact member, except the projections III and II and the soldering lug I2, is located in the space between the plates I and 2, as clearly illustrated by Figs. 4 and 6. The greater portion of each arm 8 is of less width than the space between the plates I and 2 (Fig. 6) so that it may be free to flex without interference from the plates. Thus only the loop portion 9 and the spacing portion I3 contact with the plates I and 2 to space the plates apart. The contact members are held in position by the projections Ill-III which extend through apertures I4 formed-in the top plate I, the projections II-II which extend through apertures I in the plate 2 and by the soldering lugs I2 which pass through notches I2 in the plate 2,, all as clearly illustrated at the righthand side of Fig. 6. When the contact members are assembled with the plates I and 2 in the manner just described the relatively long flexible spring arms 8-8 are supported at both ends and intersect apertures 6 and 1, so that when prongs are forced between them they are much less likely to become set than would be the case if one or both ends were not supported. Furthermore, since the prong-engaging portions are spaced from the plates and do not pass through either of them they have greater flexibility and freedom of action than with any other type of arrangement of which I am aware.

While all of the contact members may be assembled between the plates I and v2 in such a manner that a line passing lengthwise between 1 the arms 8-8 would be on a line radiating from the center of the rivet, as are some of the contacts (Fig. 7), I prefer to have some of them located on lines which are at an angle to radial the parts are relatively easy to assemble and it is very durable. especially with respect to the construction'and arrangement of the contact memhers which receive the projections of a device with which the socket cooperates.

While I have illustrated and described a preferred embodiment of my invention, I do not wish I to be limited thereby, because the scope of my invention is best defined by the following claims.

I claim: 1. An electrical socket of the class described comprising, in combination, a pair of thin superposed spaced apart insulating plates, the top plate having-apertures therethrough to permit palage of the prongs of a cooperating member, a plurality of contact members located between said plates, each of said contact members having a pair of yieldable portions located-beneath and intersecting an aperture in the top plate to receive a prong between them, and said yieldable 2. An electrical socket of the class described comprising, in combination, a pair of thin superpond spaced apart insulating plates, each hava number of apertures in alignment with the to permit passage of the prongs of a coopting member, a plurality of contact memlocated between said plates, each of said tact members having a pair of yieldable porlocated between and wholly protected by plates and intersecting an aperture in the top to receive a prong between them and each d yieldable portions having a projection at ends extending into anaperture in one d plates to prevent movement of said conmembers in relation to the plate with which are interlocked, and a means associated with s. an electrical socket of the class described 40 comprising, in combination, a pair of superposed the prongs of a cooperating member, a plurality maced apart insulating plates, the top plate hav-- us ing apertln'es therethrough to permit passage oi the prongs of a cooperating'member, a plurality of contact members located between said plates, each of said contact members having a pair of yieldable portions connected together at one end go and being located beneath and intersecting an aperture in said top plate, a soldering lug extending from said connected end and the opposite free ends having plate-engaging means extending into a hole in one of said plates,- said 5 means comprising integral projections extending at an angle from said free ends for preventing movement of said yieldable portions relative to the apertures which they intersect.

' 5. An electrical socket oi the class described 7 comprising, in combination, a pair of superposed spaced apart insulating plates, the top plate having apertures therethrough to permit passage of the prongs of a cooperating member, a plurality of contact members located between said plates, ggeaohofsaid contactmembers having apairof yieldable portions connected together at one end and being located beneath and intersecting an aperture in said top plate said contact members being held substantially flush between said plates by engagement therewith at both ends thereof, and said portions being of less width for a portion of their lengths than the width of the space between the plates to permit freedom of yielding action thereof.

6. An electrical socket ofthe class described comprising, in combination, a pair of superposed spaced apart insulating plates, the top plate having apertures therethrough to permit passage of the prongs of a cooperating member, a plurality of contact members located between said plates, each of said contact members having a pair of yieldable portions connected together at one end and being located beneath and intersecting an aperture in said top plate, a soldering lug extending from said connected end and engaging one of the plates and each of the free ends having plate-engaging projections extendinginto holes in said plates and a single fastening unit passing through the plate members, substantially centrally with respect to the apertures in the top plate, to secure the parts of the socket together.

7. An electrical socket of the class described comprising, in combination, a pair of superposed spaced apart insulating plates each having a number 01' apertures in alignment with the other to permit the passage of the prongs of a cooperating member and contact members having yieldable portions located entirely between said plates and intersecting said apertures to make electrical connection with the said prongs, said contact members also having plate-spacing portions interlocking both of the plates whereby a plurality of contact members serve to space the plates one from another and hold the apertures in both blades in proper alignment to receive the prongs of the cooperating member.

a. An, electrical socket of the class described comprising, in combination, a pair of Wind spaced apart insulating plates each having a number of apertures in aligment with the other to permit the passage of the prongs of a cooperating member and contact members having yieldable portions located entirely between said plates and intersecting said apertures to make electrical connection with the said prongs and at least some of said contact members extending between said plates in lines angled relative to radial lines from the center of said socket, each of said contact members having interlocking engagement with both of said spaced insulating plates whereby tendency of relative rotation between said plates is restrained by said contact members.

9. An electrical socket of the class described comprising, in combination,- a pair of superposed spaced apart insulating plates each having a number of apertures in alignment with the other to permit the passage of the prongs of a cooperating member and contact members having yieldable portions located entirely between said plates and intersecting said apertures to make electrical connection with the said prongs and each oi said contact members having a pair of yieldable arms connected together at one end by -a loop portion providing a spacer for the two plates and having plate-engaging projections at their free ends extending from plate-spacing means also provided at the free ends, means at the loop and free ends of the contact members acting to space the insulating plates one from another, said plate-engaging projections extending into a hole in one of said plates and a means I associated with said socket whereby the apertures of said plates are held in proper alignment to receive the prongs of the cooperating member.

10. An electrical socket of the class described comprising, in combination, a pair of superposed spaced apart insulating plates each having a number of apertures in alignment with the other and spaced about the center of each plate to permit the passage of the prongs of a cooperating member and contact members having free through both plates at their centers and providing the only means for holding the parts of the socket in assembled relation.

11. An electrical socket of the class described comprising, in combination, a pair 01' superposed spaced apart insulating plates each having a number of apertures in alignment with the other to permit the passage of the prongs of a cooperating member and contact members located between said plates and having yieldable portions intersecting said apertures to make electrical connections with said prongs, each of said contact members having spacers at both ends thereof acting as a means to maintain the plates in spaced parallel relationship, one of said ends having a projection integral with said corresponding spacer interlocking with one of said plates for preventing movement of said contact members relative to said last mentioned plate, and means associated with said socket for preventing the rotation of the other of said plates relative to the plate to which said contact members are attached.

CARL n KNUTSON.

CERTIFICATE OF CORRECTION.

Patent No.- 2,074,791.

of-tho above numbered patent requiring correction as follows:

March '25, 1937.

CARL L. KNUTSON.

i It is hereby certified that error appears in the printed specification Page,2,

second column, line 40, claim 7 for the word "blades read plates; and

that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case ,in the Patent Office.

. Signed and sealed this 27th day of April, A, o. 1937.

i seal) Leslie Frazer Acting Commissioner of Patents.

another, said plate-engaging projections extending into a hole in one of said plates and a means I associated with said socket whereby the apertures of said plates are held in proper alignment to receive the prongs of the cooperating member.

10. An electrical socket of the class described comprising, in combination, a pair of superposed spaced apart insulating plates each having a number of apertures in alignment with the other and spaced about the center of each plate to permit the passage of the prongs of a cooperating member and contact members having free through both plates at their centers and providing the only means for holding the parts of the socket in assembled relation.

11. An electrical socket of the class described comprising, in combination, a pair 01' superposed spaced apart insulating plates each having a number of apertures in alignment with the other to permit the passage of the prongs of a cooperating member and contact members located between said plates and having yieldable portions intersecting said apertures to make electrical connections with said prongs, each of said contact members having spacers at both ends thereof acting as a means to maintain the plates in spaced parallel relationship, one of said ends having a projection integral with said corresponding spacer interlocking with one of said plates for preventing movement of said contact members relative to said last mentioned plate, and means associated with said socket for preventing the rotation of the other of said plates relative to the plate to which said contact members are attached.

CARL n KNUTSON.

CERTIFICATE OF CORRECTION.

Patent No.- 2,074,791.

of-tho above numbered patent requiring correction as follows:

March '25, 1937.

CARL L. KNUTSON.

i It is hereby certified that error appears in the printed specification Page,2,

second column, line 40, claim 7 for the word "blades read plates; and

that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case ,in the Patent Office.

. Signed and sealed this 27th day of April, A, o. 1937.

i seal) Leslie Frazer Acting Commissioner of Patents. 

